fix: Avoid throwing exception when using NetworkList without a NetworkManager [Up-port]#3504

NoelStephensUnity merged 8 commits into

release/2.4.2Unity-Technologies/com.unity.netcode.gameobjects:release/2.4.2from

fix/2.x/network-manager-exception-2-4-2Unity-Technologies/com.unity.netcode.gameobjects:fix/2.x/network-manager-exception-2-4-2Copy head branch name to clipboard